Improved stone-sawing machine



lntrd mes @than @Mira .LLOYD E. BALDWIN, OF WINDHAM, CONNECTICUT, AssIGNOR TO THE ACONNECTICUT RIVER QUARRY COMPANY.

Lene/rs Parmi No. 91,507, dazed June 22,- 1869.

To all whom it ma/y concern: A v v Be it known that I, LLOYD E. BALDWIN, of'v Windham, in the county of Windham, and State of Gonnecticut, have invented anew'and useful Improvement in Stone-sawing Machines; and I declare the following to be a full and exact description thereof, reference being had ltothe accompanying drawings, and to the letters of reference marked thereon, forming a part'of this specification.

In the drawingS-- v Figure 1 is a ont elevation of my stone-sawing machine. Figure 2 is a plan view.

Figure 3 is a side-elevation. The same letter indicates the same parts in all the drawings. i,

The letter A designates the frame.

A', designates the wooden sleepers, upon which are laid the metal tracks 'i o'.

B is the saw-blade, which, for use in this machine, may be made either of iron or steel, with or without teeth, or it may be made of other metal, copper, for instance, into the edge of which may be embedded hard precious stones, preferably diamond, which, projecting from and abovethe edge of the metal disk, will act as teeth'.

When hardV precious stones are used in the manner just described, they must be so embedded in the metal disk, and of aproper'size to cut a kerf in the ston wide enough to clear thebody of the disk from contact with the stone.

The saw-disk B ishung up on the shaft a. Y

vs is a belt-pulley upon this-shaft, which isdriven by the belt I )from the wheel C, upon whose shaft x is the pulley D, which is belted to any motive-power.

The power which mainly runs the whole machine is applied here.

Upon the shaft a is a belt-wheel, d, which, by means of the belt e, drives the slightly larger belt-wheel o, which is fixed upon the shaft a.

Upon the other-end of the shaft 'n is fixed the conepulley g, which, by means of the crossed belt f, drives the cone-pulleyj upon the shaft c, to which it is xed.

Upon the shaft 'v is fixed a worm, which drives the worm-wheel l, which is loose upon its shaft m.

s is a clutch, which can slide sidewise upon- `the shaft m, but must always revolve with it. It will be readily understood, without further explanation than the drawings afford, that by means of this clutch the shaft .m can be driven by the wormwheel l, or by the loose belt-wheel E, which moves in an opposite direction from the Worm-wheel l.

It may as well benenplained` here' that the shaft m is propelled by the worm-wheel l, when a stone is being sawed, and that after a' cut is finished, the wheel E is made to propel the shaft, and to run back the stone for another cut, much more rapidly than it was fed up to the saw While being cut.

Uponv the other end of theshaft m the Worm p is' xed, which drives the worm-wheel r upon the shaft u.

Upon the further end of the shaft u are fixed the pinion w and its duplicate, which gear into and propel theftgear-wheel-y and its duplicate y upon the same sha E These V'duplicate gear-wheels work, in the duplicate racks z and z, which are'xed to the bottom of the cross-beams c' c', and eect the backward and forward movement ofthe adjustable bed upon which the stone is laid to be sawed. n

This adjustable bed runs backward and forward upon the tracks 'i i, and is supported upon the tinck-wheels a a).

Ifdesired, I can use a screw-feed here quite as well.

These truck-wheels are hung in the bottom of two stout wooden beams b' b', which are fastened together by two other stout beams c e', laid across the beams b b transversely.

On the tops of the cross-beams c c are laid two metal tracks o o', upon which run the truck-wheels cl e', which are hung in and support the two beams x1 z,which are, in their turn, joined by cross-beams.

To the beams x1 x are fixed the racks 'v' o', which gear into the gear-wheels u* n2, which,vin their turn, gear into small pinions not readily seen in the drawings upon the shaft i*,.upon the front end of which shaft 'i4 is the gear-wheel o2, gearing into the pinion i2, upon whose shaft is the handle ai; and it will be readily understood, without more particular description, that, by means of said handle ai, the top of the adjustable bed bearing the stone can be readily adj usted sidewise tothe right or left.

On the tops of the beams x1 x are four beams, of which two, ml fm), are fastened to the two beams x x. The other tWo,-fm,2 mi, are between the beams 'mI m. They have grooves cut in their under side, which allow them to slip on the beams :tl x to the right or left, as

convenience dictates.

In each of the beams fm,l m lm2 m2 are one or more levelling-screws 'i5 '113, which screw up through the beams by hand, and are used for levelling the stone and hoiding itin place.

The letter x* designates the pipes which feed water to the saw, when cutting, to keep it cool, and assist its action.

I think that without further explanation, any person fairly skilled in the business to which my improvement appertains, will understand that it is a self-feed ing machine, will understand` its construction and working, will understand that power is applied to the wheel D in the direction indicated by the arrow, and 

